There are two circles touching each other externally. The radius of the first circle with centre O is 12 cm. The radius of the second circle with centre A is 5 cm. Find the length of their common tangent touching the two circles at points P and Q.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. cm.
Length of common tangent = 2
= 2
= cm
Hence, the length of the tangent = cm